Nitrogen and phosphorus balances of Kindo Koisha farms in southern Ethiopia

Elias, Eyasu; Morse, Stephen; Belshaw, Doug

doi:10.1016/s0167-8809(98)00134-0

Cited by 84 publications

(82 citation statements)

References 8 publications

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“…Thus, the study has indicated that it is the type of capital (e.g. livestock) owned and not the volume and total value of household capital that may be important in determining nutrient balances, though previous studies indicate that resource-rich farmers have a high chance of returning positive nutrient balances in their farms should they employ nutrient adding, recycling and conserving technologies and practices [30].…”

Section: Household Resource Endowments and Nutrient Balancesmentioning

confidence: 93%

Applying Multivariate Multilevel Models to Explore Arable Land Quality in Sub-Saharan Africa: A Case Study in Kenya

Onduru¹,

Onyango²

2017

OJS

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Controversy exists on the magnitude and variability of farm nutrient balances and quality of arable land in sub-Saharan Africa with Kenya among those affected negatively. This study investigates quality of arable land by fitting multivariate multilevel model to farm nutrient balance data collected from five agro-climatic zones of Kenya (arable lands). Objectives of the study were to investigate the magnitude and variability of Nitrogen, Phosphorus and Potassium (NPK) farm nutrient balances in arable lands of Kenya, study effects of agro-climatic zones on nutrient balances and to determine effects of household resource endowments on NPK nutrient balances. The study concludes that agro-climatic zones differ with respect to farm nutrient balances; that livestock resource endowments and hired labour have positive effects on the magnitude and direction of farm nutrient balances; and that household ownership of large capital resources do not guarantee a positive effect on farm nutrient balances. The study recommends integration of sound livestock practices and application of agro-climatic zone differentiated interventions in future strategies for addressing farm nutrient balances and arable land quality, and the use of large sample sizes and relevant factors/covariates in future analysis to shed additional insights on farm nutrient balances and on how arable land quality can be improved.

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Section: Household Resource Endowments and Nutrient Balancesmentioning

confidence: 93%

Applying Multivariate Multilevel Models to Explore Arable Land Quality in Sub-Saharan Africa: A Case Study in Kenya

Onduru¹,

Onyango²

2017

OJS

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“…Soil erosion and sediment delivery processes, which are responsible for high sediment transport and the associated export of sediment-bound nutrients to deposition areas in a catchment, are influenced by landscape characteristics [13]. In line with this, studies on nutrient balances in Ethiopia indicate that the balance at farm level is more positive than plot level [11,16,17], while losses from some fields may be of benefit to other fields. This may be attributed to the effect of nutrient redistribution by erosiondeposition processes or to active nutrient transfers by farmers.…”

Section: Introductionmentioning

confidence: 94%

Assessing Sediment-Nutrient Export Rate and Soil Degradation in Mai-Negus Catchment, Northern Ethiopia

Tesfahunegn

Vlek

2013

ISRN Soil Science

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Even though soil degradation challenges sustainable development, the use of degradation indicators such as nutrient export (NE) and nutrient replacement cost is not well documented at landform level. This study is aimed to investigate the extent of soil degradation, NE rates, and their replacement cost across landforms in the Mai-Negus catchment, northern Ethiopia. Different erosion-status sites (aggrading, stable, and eroded) in the landforms were identified, and soil samples were randomly collected and analysed. Nutrient export, replacement cost, and soil degradation were calculated following standard procedures. This study showed that soil degradation in the eroded sites ranged from 30 to 80% compared to the corresponding stable site soils, but the highest was recorded in the mountainous and central ridge landforms. Average NE of 95, 68, 9.1, 3.2, 2.5, and 0.07 kg ha −1 y −1 for soil calcium, carbon, nitrogen, potassium, magnesium, and phosphorus, respectively, was found from the landforms. Significantly strong relationships between NE and sediment yield in the landforms were observed. Annual nutrient replacement costs varied among the landforms though the highest was in the reservoir (C9204 in May 2010). This study thus suggests that while introducing antierosion measures, priority should be given to erosion sources to the reservoir such as mountainous and central ridge landforms.

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“…Van der Pol, 1992;Smaling et al, 1997;Baijukya and De Steenhuijsen Piters, 1998;Bationo et al, 1998;Defoer et al, 1998;De Jager et al, 1998Elias et al, 1998;Folmer et al, 1998;Shepherd and Soule, 1998;Van den Bosch et al, 1998;Wortmann and Kaizzi, 1998;Gitari et al, 1999;Onduru et al, 2001;Gachimbi et al, 2002Gachimbi et al, , 2005Woelcke, 2003;Nkonya et al, 2004Nkonya et al, , 2005aAbegaz, 2005), although high rates of nutrient depletion are not universal (Muchena et al, 2005).…”

Section: Natural Resource Degradation In Lfasmentioning

confidence: 99%

Sustainable poverty reduction in less-favoured areas: problems, options and strategies.

Ruben

Pender²,

Kuyvenhoven

2007

Sustainable Poverty Reduction in Less-Favoured Areas

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This chapter discusses: (i) the strategic interactions between natural resource management options; (ii) farm-household livelihood strategies for welfare and risk; and (iii) the surrounding market and institutional conditions for simultaneously enabling poverty reduction and sustainable land use. The chapter starts with a definition of the main characteristics of less-favoured areas (LFAs), followed by an analysis of the interactions between poverty and resource degradation in LFAs. Hereafter, the biophysical, micro- and macroeconomic dimensions of LFA development are discussed in order to provide insight in the complex interfaces between agroecological options, household drivers for change and effective incentives for resource use adjustment. The chapter concludes with some major implications for policy and research concerning strategies for sustainable poverty reduction in less-favoured areas.

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Nitrogen and phosphorus balances of Kindo Koisha farms in southern Ethiopia

Cited by 84 publications

References 8 publications

Applying Multivariate Multilevel Models to Explore Arable Land Quality in Sub-Saharan Africa: A Case Study in Kenya

Applying Multivariate Multilevel Models to Explore Arable Land Quality in Sub-Saharan Africa: A Case Study in Kenya

Assessing Sediment-Nutrient Export Rate and Soil Degradation in Mai-Negus Catchment, Northern Ethiopia

Sustainable poverty reduction in less-favoured areas: problems, options and strategies.

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